Device for controlling windows of the sliding type



1. 1,807,548 DEVICE FOR CONTROLLING WINDOWS' F THE SLIDING TYPE W. QUICK ET AL May 26, 193

2 Sheets-#Sheet l Filed April 25. 1929 am ne May 26, 1931. w. QUICK ET AL 1,807,548

DEVICE FOR CONTROLLING WINDOWS OF THE SLIDING T YPE 2 Sheets-Sheet 2 Zzveuans aan .Z7 ,Ga

Filed April 25. 1929 lamented May y26, 1931 Uma-En'- lfs'raras;

PATENT `carica Y WILLIAM QUICK, OF LONDON, SYD'NEYEDVJARD THOIVIAS, OFvHiOUNSiLOW, AND FREDERCK WILLMBERVJ'ICK,OF LONDON, ENGLAND DEVICE FOR' CONTRGLLNG WlNDOWS 0F SLIDING TYPE Application inea April 25, 1929, serial No. 358,047, and in creas Britain May V25, 132s.

This invention relates to devices for controlling the operation of Windows of the slidable type and has particular application to Windows of the spring balanced type used on passenger vehicles.

The object of the present invention is to provide an improved construction and arrangement of spring balanced window in which the spring control means are so disposed as to occupy the minimum amount of space and thus permit the fullest range of movement to a Window under control.

According to the invention a slidable Window of the spring balanced type has a pair or pairs of oppositely disposed spring control devices disposed along one of its edges or Within one of the Window housing elements, the spring or springs employed being connected to a lixed part of the Window housing as Well as to the Window or its framework for the purpose of tensioning the spring or springs during travel of the Window in one direction.

panying drawings Which illustrate by Way of example a construction according to the invention and in Whichz- Y Y Figure 1 is an elevation with the Window framework broken away to show thespring 3o balance mechanism, thewindow being in raised position,

Figure 2 is a. plan of the parts Vshown inV Figure l,

Figure 3 is a sectional elevation taken on the line 3-3 of Figure 1 and the Wlndovv.`

being in raised position Figure 4 is a perspective diagram of the parts shown 'in the preceding figures.

1n 'the form illust-rated the invention is shown applied by Way of example to a framed Window 1 of the vertically slidable type the lovver horizontal channel shapedmember 2` of the Window frame beingixed to an inverted channel shaped housing 3 Which encloses tvvo pairs of helical springs 4 and 5 the outer ends of which are anchored around pins or studs 6 and 7 fixed Within'the outer ends of the member 3. The inner ends of the springs 4 and 5 are connected res a pulley block 8 and a pulley block 9 having pectively to two pulleys, said pulley blocks beingfreely carried Within the channel shaped member 3. To the pulleyblock 8 is connected one end of a -Wire cable 10 Which extends across the base of the Window, around theV pulley 1l in the block 9 again across the Window base, around vthe pulley 12 in the block 8, around thesecond pulley 13 in the block. 9 and inally around a pulley 14 Whose pivot is fixed at the centre of the channel member` 3. rllhe course taken by the cable 10 Will'best be understood by reference to the `perspective diagram Fig.

l4 the arrows indicating the direction of movement of the cable 10 Whenthe Window 'is lowered.' The end of the cable 10 after passing partly around the centre pulley 14 passes over a fixed grooved sector 15 and is secured to a stud 16 tothe Waist or garnish rail 17 of the Window housing. i Y With the arrangement above, described, depression of the Window moves-the Vlatter against the action of the pairsV of springs 4 and -5 which areexpanded land tensioned in Reference will noW be made to the accom-V readinessfto restore the Window upwardly when required. For thepurpose of secur- Ving the Wi-ndowtemporarily in -anydesired position vof adjustment any suitable catches o1' frictionalretaining devices maybe employed. y iv As an additional lock Ya freely pivotedcatch 17a is provided Vadjaccntthe` groovcd sector 15' and isso arrangedthat it restsby gravity against the cable 10 atthe point where this cable makes contact With'thef sector thus preventing any movement oithe cable relac tively to the pulley unless the Windoxv is intentionally moved. l

Itis to be understood thattherpulley blocks 8 and 9 are actuallyfloating Within the hous-1 ing 3, being maintained in4 their. position1 of horizontal alignment the one with the other bythe acti'n ofthe springsA 4and`5fand the tension on the Wire'cable 10. l Whereside locking cams are employed it may be desirable to replace the lower set of cams by a-spring 18 which is carried by one of the side channelmembers 19 enclosingthe edges. of the Window pane and which bears against the sides of the side guide channelQO this spring alsooperating to prevent vibrae said pulleys,

tion of a window when a vehicle is in motion.

To ensure that the ends of the Wire cable are securely anchored to the pulley block S and to the stud 16 these ends are looped and the looped portions sweated into errules 21 which are iixed around the cable by crushing them into position. In assembling the device the looped end 22 ot the Wire cable 10 is attached to the pulley block 8 and then passed around the pulleys in the sequence already described before its opposite end is attached to the stud 16.

The invention possesses the advantage that by employing helically coiled springs disposed axially parallel to the lower edge of a Window and With the operating devices between the springs, the vertical height of a Window and its frame is not materially increased above the normal height with the result that the window is free to open to the fullest extent desired whilst there is no external operating gear liable to be fouled by or to impede in any Way the Window movement.

It is to be understood that the invention is 5 not limited to the precise details of construction above described as it is equally applicable to a frameless slidable Window in Which case a channel shaped member such as the housing 3 above described may be secured to the upper, loWer or a side edge of the Window to accommodate the springs and their connections. Alternatively, the arrangement of springs which may be single instead of duplicated may be disposed within the garnish rail or other convenient part of an automobile Window housing.

`We claim:

1. In a window of the type described, a casing and a sash slidable in said casing, oppositely disposed springs mounted on the sash, each of said springs having one end connected to the sash, pulleys also mounted in the sash to which the other ends of said springs .are connected, a cable movable over and having one end connected to the casing and the other'end to one of the pulleys for the purpose of tensioning the springs during the travel of the Window in one direction.

2. In a Window of the type described7 a casing and a sash slidable in said casing, a pair of pulley blocks movable in said sash, a pair of oppositely disposed coiled springs cach having one of its ends connected to said sash and its other end connected to one of said blocks, a single pulley rotatable in one of said blocks, a pair of pulleys rotatable in the other block, a fourth pulley rotatable on a iXed axis carried by said sash between said blocks, and a cable having one end connected to said casing and passing first over the lastnamed pulley, secondly over one of said pair of pulleys, thirdly over the irst-named pul ley, and 'fourthly over the other of said pair of pulleys and having its other end connected to the block Which carries the single pulley.

In testimony whereof We have hereunto set our hands.

WILLIAM QUICK. SYDNEY EDIVVARD THOMAS. FREDERICK WILLIAM BERWICK. 

